Abstract

A new type of photodetector with cascaded waveguide grating filters as a bottom reflection mirror is proposed. A greatly improved spectral response is shown to follow by the integration of a waveguide grating into classical thin-film homogeneous layers. Calculation results for a single grating, a cascaded-double grating, and a cascaded-triple grating structure are demonstrated. An increasing rectangular spectral response is obtained by cascading two or three grating filters. Compared with a traditional photodetector with distributed Bragg reflectors, this new type of photodetector with the same materials requires significantly fewer layers while maintaining narrow flattop response, high peak efficiency, and low sideband reflectance.

© 2009 Optical Society of America

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References

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  1. M. S. Unlu and S. Strite, “Resonant cavity enhanced photonic devices,” J. Appl. Phys. 78, 607-639 (1995).
    [CrossRef]
  2. C.-H. Chen, K. Tetz, and Y. Fainman, “Resonant-cavity-enhanced p-i-n photodiode with a broad quantum-efficiency spectrum by use of an anomalous-dispersion mirror,” Appl. Opt. 44, 6131-6140 (2005).
    [CrossRef] [PubMed]
  3. M. Gokkavas, G. Ulu, O. Dosunmu, R. P. Mirlin, and M. S. Unlu, “Resonant cavity enhanced photodiodes with a broadened spectral peak,” in 14th Annual Meeting of the IEEE Lasers and Electro-Optics Society (IEEE, 2001), Vol. 2, pp. 768-769.
  4. H. Cheng, H. Hui, W. Wenjuan, and H. Yongqing, “Design of a tunable InP-based long wavelength photodetector with flat-top and steep-edge response,” Semiconductor Opt. 26, 100-104 (2005) (in Chinese).
  5. M. G. Moharam, D. A. Pommet, and E. B. Grann, “Stable implementation of the rigorous coupled-wave analysis of surface-relief gratings: enhanced transmittance matrix approach,” J. Opt. Soc. Am. A 12, 1077-1086 (1995).
    [CrossRef]
  6. M. G. Moharam, E. B. Grann, D. A. Pommet, and T. K. Gaylord, “Formulation for stable and efficient implementation of the rigorous coupled wave analysis of binary gratings,” J. Opt. Soc. Am. A 12, 1068-1076 (1995).
    [CrossRef]
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    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]
  9. D. K. Jacob, “Dielectric resonant grating structure for narrow-band filtering application,” Ph.D. thesis (University of Central Florida, 2001).

2005

H. Cheng, H. Hui, W. Wenjuan, and H. Yongqing, “Design of a tunable InP-based long wavelength photodetector with flat-top and steep-edge response,” Semiconductor Opt. 26, 100-104 (2005) (in Chinese).

C.-H. Chen, K. Tetz, and Y. Fainman, “Resonant-cavity-enhanced p-i-n photodiode with a broad quantum-efficiency spectrum by use of an anomalous-dispersion mirror,” Appl. Opt. 44, 6131-6140 (2005).
[CrossRef] [PubMed]

1995

1993

Chen, C.-H.

Cheng, H.

H. Cheng, H. Hui, W. Wenjuan, and H. Yongqing, “Design of a tunable InP-based long wavelength photodetector with flat-top and steep-edge response,” Semiconductor Opt. 26, 100-104 (2005) (in Chinese).

Dosunmu, O.

M. Gokkavas, G. Ulu, O. Dosunmu, R. P. Mirlin, and M. S. Unlu, “Resonant cavity enhanced photodiodes with a broadened spectral peak,” in 14th Annual Meeting of the IEEE Lasers and Electro-Optics Society (IEEE, 2001), Vol. 2, pp. 768-769.

Fainman, Y.

Gaylord, T. K.

Gokkavas, M.

M. Gokkavas, G. Ulu, O. Dosunmu, R. P. Mirlin, and M. S. Unlu, “Resonant cavity enhanced photodiodes with a broadened spectral peak,” in 14th Annual Meeting of the IEEE Lasers and Electro-Optics Society (IEEE, 2001), Vol. 2, pp. 768-769.

Grann, E. B.

Hui, H.

H. Cheng, H. Hui, W. Wenjuan, and H. Yongqing, “Design of a tunable InP-based long wavelength photodetector with flat-top and steep-edge response,” Semiconductor Opt. 26, 100-104 (2005) (in Chinese).

Jacob, D. K.

D. K. Jacob, “Dielectric resonant grating structure for narrow-band filtering application,” Ph.D. thesis (University of Central Florida, 2001).

Magnusson, R.

Mirlin, R. P.

M. Gokkavas, G. Ulu, O. Dosunmu, R. P. Mirlin, and M. S. Unlu, “Resonant cavity enhanced photodiodes with a broadened spectral peak,” in 14th Annual Meeting of the IEEE Lasers and Electro-Optics Society (IEEE, 2001), Vol. 2, pp. 768-769.

Moharam, M. G.

Pommet, D. A.

Strite, S.

M. S. Unlu and S. Strite, “Resonant cavity enhanced photonic devices,” J. Appl. Phys. 78, 607-639 (1995).
[CrossRef]

Tetz, K.

Ulu, G.

M. Gokkavas, G. Ulu, O. Dosunmu, R. P. Mirlin, and M. S. Unlu, “Resonant cavity enhanced photodiodes with a broadened spectral peak,” in 14th Annual Meeting of the IEEE Lasers and Electro-Optics Society (IEEE, 2001), Vol. 2, pp. 768-769.

Unlu, M. S.

M. S. Unlu and S. Strite, “Resonant cavity enhanced photonic devices,” J. Appl. Phys. 78, 607-639 (1995).
[CrossRef]

M. Gokkavas, G. Ulu, O. Dosunmu, R. P. Mirlin, and M. S. Unlu, “Resonant cavity enhanced photodiodes with a broadened spectral peak,” in 14th Annual Meeting of the IEEE Lasers and Electro-Optics Society (IEEE, 2001), Vol. 2, pp. 768-769.

Wang, S. S.

Wenjuan, W.

H. Cheng, H. Hui, W. Wenjuan, and H. Yongqing, “Design of a tunable InP-based long wavelength photodetector with flat-top and steep-edge response,” Semiconductor Opt. 26, 100-104 (2005) (in Chinese).

Yongqing, H.

H. Cheng, H. Hui, W. Wenjuan, and H. Yongqing, “Design of a tunable InP-based long wavelength photodetector with flat-top and steep-edge response,” Semiconductor Opt. 26, 100-104 (2005) (in Chinese).

Appl. Opt.

J. Appl. Phys.

M. S. Unlu and S. Strite, “Resonant cavity enhanced photonic devices,” J. Appl. Phys. 78, 607-639 (1995).
[CrossRef]

J. Opt. Soc. Am. A

Semiconductor Opt.

H. Cheng, H. Hui, W. Wenjuan, and H. Yongqing, “Design of a tunable InP-based long wavelength photodetector with flat-top and steep-edge response,” Semiconductor Opt. 26, 100-104 (2005) (in Chinese).

Other

D. K. Jacob, “Dielectric resonant grating structure for narrow-band filtering application,” Ph.D. thesis (University of Central Florida, 2001).

M. Gokkavas, G. Ulu, O. Dosunmu, R. P. Mirlin, and M. S. Unlu, “Resonant cavity enhanced photodiodes with a broadened spectral peak,” in 14th Annual Meeting of the IEEE Lasers and Electro-Optics Society (IEEE, 2001), Vol. 2, pp. 768-769.

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Figures (10)

Fig. 1
Fig. 1

Schematic of grating structure with rectangular-index profile of high n H = 3.4 and low n L = 3.1 indices with period Λ = 487 nm and thickness d = 119 nm (quarter wave at λ = 1550 nm ).

Fig. 2
Fig. 2

Schematic diagram of a single waveguide grating photodetector consisting of a p-i-n photodiode sandwiched between the DBR mirrors and a waveguide grating filter.

Fig. 3
Fig. 3

Quantum efficiency of a single waveguide grating photodetector centered at 1550 nm , Δ λ 0.9 / Δ λ 0.1 = 0.12 , FWHM = 1.26 nm .

Fig. 4
Fig. 4

Top mirror reflectivity as a function of the wavelength.

Fig. 5
Fig. 5

Power enhancement factor as a function of α d .

Fig. 6
Fig. 6

Quantum efficiency as a function of α d at the condition of the grating filter reflectivity R 2 = 0.99 and as a function of top mirror reflectivity R 1 .

Fig. 7
Fig. 7

Structure of a cascaded double waveguide grating photodetector consisting of a p-i-n photodiode sandwiched between the DBR mirrors and a waveguide grating filter.

Fig. 8
Fig. 8

Quantum efficiency of a cascaded double waveguide grating photodetector centered at 1550 nm , Δ λ 0.9 / Δ λ 0.1 = 0.34 , and FWHM = 1.729 nm .

Fig. 9
Fig. 9

Structure of a cascaded triple waveguide grating photodetector consisting of a p-i-n photodiode sandwiched between the DBR mirrors and a waveguide grating filter.

Fig. 10
Fig. 10

Quantum efficiency of a cascaded triple waveguide grating photodetector centered at 1550 nm , Δ λ 0.9 / Δ λ 0.1 = 0.63 , FWHM = 1.591 nm .

Equations (3)

Equations on this page are rendered with MathJax. Learn more.

η = [ 1 + R 2 exp ( α d ) ] 1 2 R 1 R 2 exp ( α d ) cos ( 2 β + ψ 1 + ψ 2 ) + R 1 R 2 exp ( α d ) × ( 1 R 1 ) × [ 1 exp ( α d ) ] ,
δ = 2 ( δ grat + δ n 1 + δ n 2 + δ sep ) ,
δ grat , n 1 , n 2 , sep = 2 π λ n grat , n 1 , n 2 , sep d grat , n 1 , n 2 , sep .

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